I'm almost ready to buy my lighting and am wondering what to go for a 250w DE setup or the 250w SE mogul based setup. Anyone help me out here in deciding? It will be for a sps tank
Have you read the latest issue of Advanced Aquarist? There's an excellent article by Sanjay Joshi and Tim Marks about DE setups. Also if you look thru the article index there, you should also be able to find the one about the SE bulbs too.